. Bees & bee-keeping; scientific and practical. A complete treatise on the anatomy, physiology, floral relations, and profitable management of the hive bee. Bee culture; Bees. GENERAL STRUCTURE. 39 horizontal diaphragm or division wall separating the abdomen into two very unequal parts, the larger of which is below. This diaphragm* in contracting increases the upper cavitv and diminishes the lower, and so pressing to- gether the viscera, drives from them blood, which now enters the heart chamber or pericardial cavity (pc, Fig. 8), by apertures in the diaphragm itself. i? d. Fig. 8.—Cross S
. Bees & bee-keeping; scientific and practical. A complete treatise on the anatomy, physiology, floral relations, and profitable management of the hive bee. Bee culture; Bees. GENERAL STRUCTURE. 39 horizontal diaphragm or division wall separating the abdomen into two very unequal parts, the larger of which is below. This diaphragm* in contracting increases the upper cavitv and diminishes the lower, and so pressing to- gether the viscera, drives from them blood, which now enters the heart chamber or pericardial cavity (pc, Fig. 8), by apertures in the diaphragm itself. i? d. Fig. 8.—Cross Section of Abdomen of Worker Bee (Magnified Eight times). dv, Dorsal Vessel: d, Diaphragm; jx-. Pericardial Cavity; sp, Spiracle; tr, Tracheae ; ts, Tracheal Sac ; at, Stomach ; n, Xerve ; pa. Ganglion. The dorsal vessel presents many microscopical curiosities ; it rests upon a cushion of pericardial cells, with singular nuclei, and which sometimes send extensions either into the outer layer of the heart or the diaphragm. We also find here lobes of fatty bodies [corps graisseux), containing here and there the cellules enclavees, or separate cells of Graber, of yellow colour, with a single nucleus, and which resists the action of acids and alkalies, and, beside, multitudes of nerve filaments, and some exceed- ingly fine ramifications of the tracheal system. * This diaphragm has been investigated by Graber (see "Archiv fiir Anat. microscop de Schultze," vol. ix., p. 129).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cheshire, Frank Richard, 1833?-1894. London, L. U. Gill
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbeec, booksubjectbees
